ALTO Performance Cost Metrics
draft-ietf-alto-performance-metrics-00

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Document Type Active Internet-Draft (alto WG)
Last updated 2016-09-07
Replaces draft-wu-alto-te-metrics
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ALTO Working Group                                                 Q. Wu
Internet-Draft                                                    Huawei
Intended status: Standards Track                                 Y. Yang
Expires: March 10, 2017                                  Yale University
                                                                  Y. Lee
                                                                D. Dhody
                                                                  Huawei
                                                          S. Randriamasy
                                                         Nokia Bell Labs
                                                       September 6, 2016

                     ALTO Performance Cost Metrics
                 draft-ietf-alto-performance-metrics-00

Abstract

   Cost Metric is a basic concept in Application-Layer Traffic
   Optimization (ALTO).  It is used in both the Cost Map Service and the
   Endpoint Cost Service.  Future extensions to ALTO may also use Cost
   Metric.

   Different applications may benefit from different Cost Metrics.  For
   example, a Resource Consumer may prefer Resource Providers that have
   low delay to the Resource Consumer.  However the base ALTO protocol
   [ALTO] has documented only a single cost metric, i.e., the generic
   "routingcost" metric (Sec. 14.2 of ALTO base specification [ALTO]).

   In this document, we proposes a set of Cost Metrics, derived and
   aggregated from routing protocols with different granularity and
   scope, such as BGP-LS,OSPF-TE and ISIS-TE, or from end to end traffic
   management tool.  We currently document 11 new Performance Metric to
   measure network delay, jitter, packet loss, hop count, and bandwidth.
   The metrics documented in this document provide a relatively
   comprehensive set of Cost Metrics for ALTO and allow applications to
   determine "where" to connect based on end to end network performance
   criteria.  Additional Cost Metrics such as financial cost metrics may
   be documented in other documents.

   Requirements Language The key words "MUST", "MUST NOT", "REQUIRED",
   "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY",
   and "OPTIONAL" in this document are to be interpreted as described in
   RFC 2119 [RFC2119].

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Internet-Draft        ALTO Performance Cost Metrics       September 2016

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   Internet-Drafts are working documents of the Internet Engineering
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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on March 10, 2017.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Data sources, computation of defined cost metrics . . . . . .   5
     2.1.  Data sources  . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  Computation of metrics  . . . . . . . . . . . . . . . . .   5
   3.  Cost Metric: OWDelay  . . . . . . . . . . . . . . . . . . . .   6
   4.  Cost Metric: PDV  . . . . . . . . . . . . . . . . . . . . . .   8
   5.  Cost Metric: Packet Loss  . . . . . . . . . . . . . . . . . .   9
   6.  Cost Metric: Hop Count  . . . . . . . . . . . . . . . . . . .  11
   7.  Cost Metric: Bandwidth  . . . . . . . . . . . . . . . . . . .  13
   8.  Cost Metric: Maximum Bandwidth  . . . . . . . . . . . . . . .  14
   9.  Cost Metric: Maximum Reservable Bandwidth . . . . . . . . . .  16
   10. Cost Metric: RTT  . . . . . . . . . . . . . . . . . . . . . .  18
   11. Cost Metric: Residue Bandwidth  . . . . . . . . . . . . . . .  20
   12. Cost Metric: Available Bandwidth  . . . . . . . . . . . . . .  22

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